Trail Running Calendar East of England 2025-2026

Join Suffolk Endurancelife in Dunwich on 11 October 2025 for 10K to ultra trail distances across flat coastal heath, moorland and beach. Enjoy waymarked routes, electronic timing, a finishers medal and a lively post race party.

Event format This is a backyard ultramarathon in which participants run a repeated loop. Each loop is 4.167 miles (6.7 km). Runners must start each loop precisely on the hour and must complete the loop within that hour to continue. If a run..

Event overview The Essex AA Cross Country Relays will take place on Saturday 11 October 2025 at Hylands Park, Chelmsford, CM2 8FS. The event is hosted by Billericay Striders and follows the 2024 format for 2025. Race formats include: U13/1..

North Chilterns 50K - Event overview The North Chilterns 50K is a trail ultra held from Putteridge Bury Country House. The 4th edition takes place on Sunday 12th October 2025. The course distance is 50 km with approximately 798 m of elevati..

Event details The Southend Pier Marathon is a full marathon held on Southend Pier in Southend On Sea. The pier stretches for 1.34 miles. The event date is 12 October 2025. The race is organised by Sussex Trail Events. The minimum age for pa..

West Acre Wild 10k Challenge is an off-road 10-kilometre race set in Westacre, Norfolk. The course winds through undulating bridle paths and woodland tracks, with a short paved section at the start and surfaces that can be wet or muddy afte..

The Ridgeway Run is a challenging 15-kilometre (9.3 miles) trail race organized by Tring Running Club, featuring scenic routes mainly on footpaths and bridleways with stunning views of the Chilterns. The course starts near Tring, ascends th..

Event overview The Tarmac Twister Trail takes place on 15 October 2025 and is organised by Essex Trail Events. The route is approximately 6 miles and the minimum age is 16. The event holds TRA permit 7706. It is a self-navigation trail race..

Run a scenic half marathon through Thetford Forest this autumn, tackling forest trails, grassy paths and sandy tracks on a traffic free, signed circular route. Enjoy eco friendly medals, pro photos and a relaxed nature filled race day.

Take on the Viper 5 Mile autumn trail in the dark around Mill Green, an atmospheric night run with just 50 places. This self sufficient event requires headtorches and phones, and finishes back at The Viper for a well earned drink and food.

Run scenic circular routes along the north River Blackwater estuary with 26.5 mile and 18 mile options near Heybridge Essex. Enjoy checkpoint snacks, a finish meal and a finisher certificate on this friendly LDWA event.

Epping Forest Wildwood Trail Series Half Marathon & 10K takes place in Epping Forest, London, with start/registration at Chingford Plain, Rangers Road, E4 7QH. Runners choose between a Half Marathon (two laps) or a 10K (one lap) through anc..

The Pumpkin Plod is a multi-terrain running event held at Ferry Meadows, part of the expansive Nene Park near Peterborough. Participants can choose between a 6-hour or 4-hour timed challenge, running laps of a 5.3 km course featuring gravel..

Tackle the Stort30, a scenic 30 mile ultramarathon along the River Stort and Lee navigation from Bishop's Stortford. Mostly grassy trail with muddy sections, aid every five miles and finish line clubhouse facilities.

Event details The Halloween Trail is a narrative trail race on 31 October 2025. The course is described as about 8.5ish miles and follows a circular route around the town of Maldon. The route is approximately 95% off road and covers a varie..

Event overview The Chiltern Ridge Winter 50K is a single-loop trail race held in the Chilterns, with the start and finish at Berkhamsted Cricket Club. The next edition is on 1 November 2025. The event distance is 50K with approximately 800..

The Fireworks 50 is a 50-mile running event organized by Zig Zag Running, held at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Now in its fourth year, this unique race takes place on a traffic-free athletics track, offering..

2025 Winter Warrior 50km Ultra The Winter Warrior is a 50 km trail ultramarathon on Saturday 1 November 2025, running from Trowse in Norwich to Hope Church in Diss along the Boudicca Way. The route stays on the Boudicca trail and passes thr..

The ZigZag Catherine Wheel Canter is a unique running event held at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Participants can choose from various distances including 5k, 10k, half marathon, full marathon, 50k ultra, or..

Join a guided 10 km trail run through the Chiltern Hills with Run The Wild, grouped by ability and suitable for runners who can cover 5 km non stop. Finish with a Tring Brewery tour, beer tasting and a bottle to take home.